Your service is really, really GREAT
there is no need to change anything, also not the design of the website, just a little bit:
is it possible to see more than the "Here is some info about your last 3 eaten message(s) "
maybe 10 ?
several times i forgot to increase the "remaining messages " for a address, and i was not aware that it is already blocked.
with a longer list this would be more save.
everything els is really perfect!
regards